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CVE-2026-42527 Apache CVE debrief

The CVE record for CVE-2026-42527 was published on 2026-07-06T09:16:35.657Z and has not been modified since then. The NVD entry is currently Analyzed. This Deserialization of Untrusted Data vulnerability in Apache Camel, specifically in the default ObjectInputFilter pattern used by several components, allows classes whose hashCode/equals/readObject methods perform network I/O, such as java.net.URL and java.net.InetAddress. An attacker can exploit this by delivering a Java-serialized payload to an affected Camel consumer, potentially causing the JVM to issue DNS queries to the attacker-supplied host during deserialization. The exposure is highest on the camel-jms family because JmsBinding.extractBodyFromJms invokes ObjectMessage.getObject() unconditionally when mapJmsMessage=true (default). Affected components include camel-jms, camel-sjms, camel-amqp, camel-mina, camel-netty, camel-netty-http, camel-vertx-http, camel-infinispan, and the aggregation repository components camel-leveldb, camel-cassandraql, camel-consul, camel-sql (JDBC aggregation repository).

Vendor
Apache
Product
Camel
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-06
Original CVE updated
2026-07-07
Advisory published
2026-07-06
Advisory updated
2026-07-07

Who should care

Users of Apache Camel versions from 4.14.0 before 4.14.8, from 4.15.0 before 4.18.3, and from 4.19.0 before 4.21.0 should be aware of this vulnerability. Specifically, operators managing Apache Camel deployments, platform administrators responsible for the underlying infrastructure, vulnerability management teams assessing the risk of affected components, and security teams validating the effectiveness of mitigations should prioritize reviewing and addressing this issue.

Technical summary

A Deserialization of Untrusted Data vulnerability exists in Apache Camel, specifically in the default ObjectInputFilter pattern used by several components. This pattern allows classes whose hashCode/equals/readObject methods perform network I/O, such as java.net.URL and java.net.InetAddress. An attacker can exploit this by delivering a Java-serialized payload to an affected Camel consumer, potentially causing the JVM to issue DNS queries to the attacker-supplied host during deserialization.

Defensive priority

High priority should be given to upgrading to a version that contains the CAMEL-23372 fix: 4.21.0 for the 4.21.x line, 4.18.3 for the 4.18.x line, and 4.14.8 for the 4.14.x line.

Recommended defensive actions

  • Upgrade to a version that contains the CAMEL-23372 fix: 4.21.0 for the 4.21.x line, 4.18.3 for the 4.18.x line, and 4.14.8 for the 4.14.x line.
  • Configure a JMS-provider-side allow-list (Apache ActiveMQ Artemis 'deserializationAllowList' / 'deserializationDenyList', Apache ActiveMQ Classic 'org.apache.activemq.SERIALIZABLE_PACKAGES') as the primary mitigation.
  • Override the in-code default via the endpoint-level 'deserializationFilter' option or the JVM-wide '-Djdk.serialFilter' system property with an explicit deny: '!java.net.**;java.**;javax.**;org.apache.camel.**;!*' (or '!
  • Perform inventory checks to identify potentially affected components: camel-jms, camel-sjms, camel-amqp, camel-mina, camel-netty, camel-netty-http, camel-vertx-http, camel-infinispan, and the aggregation repository
  • Configure compensating controls, such as monitoring and exception tracking, to detect potential exploitation attempts.

Evidence notes

The CVE record was published on 2026-07-06T09:16:35.657Z and has not been modified since then. The NVD entry is currently Analyzed. The vulnerability affects Apache Camel versions from 4.14.0 before 4.14.8, from 4.15.0 before 4.18.3, and from 4.19.0 before 4.21.0.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42527 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42527

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-42527 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42527

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.